stabilization of centrifuges with instabilities due to fluid-structure interactions: various control approaches

Clicks: 205
ID: 249275
2001
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Abstract
Partially filled centrifuges exhibit unstable behavior over particular rotational speed ranges. To remove this unstable behavior, three different control approaches are presented which are experimentally implemented using a magnetic bearing. First, by means of a PD-controller the system stiffness is changed leading to a shift of the instability region. Second, the instability region is removed by a cross coupled feed back of the rotor vibration velocities. This cross coupling directly counteracts the fluid excitation mechanism. Third, a disturbance observer is presented which allows to estimate and compensate the not exactly known fluid force.
Reference Key
ulbrich2001internationalstabilization Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Heinz Ulbrich;Adrian Cyllik;Guido Ahaus
Journal ACS omega
Year 2001
DOI
10.1155/S1023621X01000276
URL
http://dx.doi.org/10.1155/S1023621X01000276
Keywords
centrifuge engineering (general) civil engineering (general) magnetic bearing

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